High-quality power supplies specialist MTM Power GmbH offers DC/DC converters from its HVC series with 250W for railway applications. The devices are available with an input range of 420VDC to 1,100VDC (375VDC to 1125VDC; t≤2s), an isolation up to 8kVAC and the standard output voltage of 24VDC. With these high voltage converters it is possible to supply electronical equipment out of 600V / 750V contact wire. The DC/DC converters are used for supplying points, signal lamps and electronic monitoring of the rail net.
The specific feature of the series HVC is its use as a self starting module for trams or trolley buses with exhaustive discharged batteries so that the towing process can be avoided. The rugged design together with high-quality components guarantee the high reliability in vehicles even under severe shock and vibration conditions. The high efficiency of 88%, and the dimensions of 330mmx170mmx87mm allow an operation without forced ventilation. Moreover the converters work within an ambient temperature range from -40°C to +85°C according to EN 50 155.